Playing God: should we revive extinct species?

Scientists have sequenced the DNA of the Tasmanian tiger, which died out in the 1930s, bringing them closer to recreating the animal – and there are plans to do the same with the woolly mammoth. But is it ethical to do so?
It sounds like something from a sci-fi B-Movie: scientists have moved a step closer to bringing the Tasmanian tiger back from extinction.Also known as the thylacine, or Tasmanian wolf, the world’s largest carnivorous marsupial died out in its native land sometime d